libreoffice:ww2fuzzer: Bad-cast to SwIndexReg from invalid vptr in SwIndex::Remove

Project: git://anongit.freedesktop.org/libreoffice/core Detailed Report: https://oss-fuzz.com/testcase?key=6486597302878208 Project: libreoffice Fuzzing Engine: libFuzzer Fuzz Target: ww2fuzzer Job Type: libfuzzerubsanlibreoffice Platform Id: linux Crash Type: Bad-cast Crash Address: 0x000016541d...